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ASTM A709 Steel Plate

Recommended for 

Carbon and high-strength low-alloy steel structural shapes, and plates; quenched and tempered alloy steel, for structural plates meant for use in bridges.

We will be glad to help you select the exact grade for your needs.


  • 36
  • 50
  • 50S
  • QST 50
  • QST 50S
  • 50W
  • HPS 50W
  • 50CR
  • QST65
  • QST 70
  • HPS 70W
  • HPS 100W
Questions? Contact our industry professionals!


  • Strength, Yield Strength ksi (MPa), Tensile Strength ksi (MPa): Stronger, 58-130 (400-900)
  • Formability: % Elongation: Low for some grades, 14-21%
    For better formability consider Drawing Steel
  • Joining – Fair
    Design and welding must account for stresses.
  • Corrosion Resistance – Good   
    Galvanizing will slow corrosion.   For longer life in harsh chemical conditions, consider Galvanized or Coated Steel
  • Chemistry  Low carbon, high manganese and silicon, alloyed with copper, Chromium, Nickel, and Molybdenum
  • Cost – Higher.  
    Good when thinner or stronger steels will add value.

Explore Our Available Steel Products & Grades

Our knowledge and experience give nearly 100% accurate delivery of High Carbon, Low Carbon, Stainless Steel products processed and packaged to your exact specifications.

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